I would generally agree with you Rich about the lack of need for a massive charger.
However, if the boat is being used for multiday passages or even just very short stops between long days of sailing and no motor, then topping up the batteries quickly has its advantages. A few places i've been where this was an advantage are Reedville VA, Yorktown VA, and Hampton VA where you can pull up for dinner or to walk the town for free but it will cost you to stay the night. A 10amp charger for 8 hours overnight will only get you 80amp-hours of bulk charge, less for absorption and no time for conditioning. My fridge averages ~5amps per hour so a 24hr day costs me ~100 amp-hours. That's not counting the stereo, vhf, sailing instruments, nav lights, anchor light, cabin lights, water pump, vacu-flush, auto-helm. Bear in mind that if my biggest and only expected load was the fridge and I planned on needing 100amp-hours per day then I would need to plan on having a 200amp-hour battery bank (roughly 2 standard deep cycle batteries) because, in general draining the batteries below 50% will shorten their life. Thus 25% charging capacity = a 50amp charger. Like I said these examples are I little bit more towards the exception but it does show the need to have both an adequately sized battery bank and an adequately sized battery charger. Josh Muckley S/V Sea Hawk On Aug 31, 2014 11:40 PM, "Rich Knowles via CnC-List" <cnc-list@cnc-list.com> wrote: > I can't see any reason to install a massive charger on a 35' boat with > minimal dockside DC needs other than refrigeration and stereo. Charging > overnight with a 10 or 20 amp charger will generally suffice to top up the > batteries after a day or two on the water. > > Also, why three banks? Most of the boats I work on and have owned have > three batteries; two in parallel for the house bank and one for engine > starting. > Just curious. > > Rich > > On Aug 31, 2014, at 23:29, Joe Della Barba via CnC-List < > cnc-list@cnc-list.com> wrote: > > http://stores.ebay.com/The-ChargerGuy?_trksid=p2047675.l2563 > > > > This store seems to have good deals. I have an old metal TrueCharge that > hasn't been made in a long time. > > > > Joe Della Barba > > j...@dellabarba.com > > > > Coquina > > *From:* CnC-List [mailto:cnc-list-boun...@cnc-list.com > <cnc-list-boun...@cnc-list.com>] *On Behalf Of *Josh Muckley via CnC-List > *Sent:* Sunday, August 31, 2014 10:04 PM > *To:* Glen Eddie; C&C List > *Subject:* Re: Stus-List Battery chargers. > > > > There are a lot of great options out there. My expierience with Xantrex > TrueCharge 2 (40 amp and 60 amp) was very poor and I would recommend > staying away from them. As a replacement I got a ProNautiP from ProMariner > (60amp) and have had absolutely no issues. > > > http://promariner.com/products/dry-mount-marine-battery-chargers/pronauticp-series/ > > Use care when selecting the current capacity of the charger. It should be > selected based on the Amp-hour capacity of the largest battery bank. 25% > of capacity for lead-acid, 30% for gel, 40% for AGM. > > Josh Muckley > S/V Sea Hawk > 1989 C&C 37+ > Solomons, MD > > On Aug 31, 2014 6:35 PM, "Glen Eddie via CnC-List" <cnc-list@cnc-list.com> > wrote: > > > > Anyone have recommendations for a three bank battery charger for a c&c 35 > mk i > > > ------------------------------ > > > > *Glen Eddie* > > Tel: 416-777-5357 > > Fax: 1-888-812-2557 > > ged...@torkinmanes.com > > VCard <http://www.torkinmanes.com/vcard.aspx?ID=glen-eddie> > > > *Torkin Manes LLP* > Barristers & Solicitors > > 151 Yonge Street, Suite 1500 > Toronto ON M5C 2W7 > torkinmanes.com <http://www.torkinmanes.com> > Member of the International Alliance of Law Firms > <http://www.ialawfirms.com> > > This email message, and any attachments, is intended only for the named > recipient(s) above and may contain content that is privileged, confidential > and/or exempt from disclosure under applicable law. If you have received > this message in error, please notify the sender and delete this email > message. Thank you. > > > _______________________________________________ > This List is provided by the C&C Photo Album > > Email address: > CnC-List@cnc-list.com > To change your list preferences, including unsubscribing -- go bottom of > page at: > http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com > > _______________________________________________ > This List is provided by the C&C Photo Album > > Email address: > CnC-List@cnc-list.com > To change your list preferences, including unsubscribing -- go bottom of > page at: > http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com > > > _______________________________________________ > This List is provided by the C&C Photo Album > > Email address: > CnC-List@cnc-list.com > To change your list preferences, including unsubscribing -- go bottom of > page at: > http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com > > >
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